Headphone amplifier headphone amplifier referred to as amp. In the earphone system, adding a headphone power amplifier between the audio source and the earphone can improve the sound quality and adjust the tone of the system, which has already formed a consensus among the earphone enthusiasts. Especially for the higher-end headphones of more than 1,000 yuan, the sound quality improvement after using the headphone amplifier is obviously audible.
Although most audio sources (such as CD players) have earphone output jacks, the circuit and materials behind this jack are generally mediocre. Take the CD machine as an example, generally use a 4556, 4558 and other op amps to do the amplification, the cost is only a few dollars, how the sound quality can be imagined. Even the more advanced CD players, their headphone amplifier circuits rarely reach the "fever" level.
Some 10,000-level CD players, but their headphone amplification only uses two pieces of JRC4558. Although most moving-coil headphones are enough, if they are measured by high standards, they are not enough. The true strength of high-end headphones. There are also some mid-to-high-end audio sources, such as the Marantz CD17 and above. To ensure the sound quality, there is no headphone jack, and it can only be used with the headphone amplifier.
The role of the headphone amplifier Headphone amplifier Headphone amplifier is a power amplifier specially designed for headphones, mainly used to promote high-end high-impedance headphones. The impedance of ordinary headphones is generally 16-32 ohms. In order to obtain better low-frequency response, the high-level hifi/target=_blank>HIFI fever headphones often adopt high-density coil long-stroke design. At this time, the DC impedance of the headphones will be as high as 200- 600 ohms.
A typical Walkman or power amplifier is a low-impedance output design. Wearing such a high-impedance earphone will double the output power and destroy the frequency response curve, because the last-stage power tube does not work in the linear region. Headphone amplifiers can accommodate these high-impedance headphones. At the same time, the headphone amplifier can modify the sound quality to form a personality based on the improved output power.
Headphone amplifier recommended 1, SPL Phonitor 2730
Matching headphones: Sennheiser HD800
Reference price: 18,000 yuan SPL Phonitor 2730 is a balanced input, input headphone amplifier positioned at the top. It is manufactured by SPL, a German old recording and monitoring equipment manufacturer. The SPL Phonitor 2730 has built-in multiple function adjustments for use with different headphones and impedances. In addition, the amp is a fully balanced interface, so the audio input and the interface of the headphones need to be balanced to be used.
2. Beyerdynamic A1
Matching headphones: Beyerdynamic DT880, DT990, T1
Reference price: 9900 yuan Is there an amp that can be perfect? ​​Beyerdynamic A1 is a model. Beyerdynamic A1 amps can't be used for luxury, but its comprehensive quality and sense of hearing are far superior to Lehman, SOLO and other big-name amps. It can also be used to maximize the strength of the IA series high-end headphones. . Especially when driving the million-class headphones T1, you can get excellent sound performance.
3, O1 overseas version matching headphones: AKG K701, DT990
Reference price: 4,500 yuan O1 overseas version is a headphone amplifier with built-in DAC module, which provides a simple solution for users who are looking for cost-effective. The device has a fiber optic, coaxial interface, and can be connected to a PC with the above interface, or a desktop CD player. At the same time, the built-in amplifier part works well, especially the classical symphony performance is remarkable.
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